saslibpy 0.1.3

python SDK for solana attestation service

Solana attestation service

The Solana Attestation Service (SAS) architecture guide is a technical overview of a credibly neutral attestation registry protocol. The SAS is built to enable the association of off-chain data with on-chain wallets through trusted attestations, serving as verifiable claims issued by trusted entities while preserving user privacy.

Solana attestation service python SDK

import

saslib

from saslibpy.credential import Credential
from saslibpy.schema import Schema
from saslibpy.attestation import Attestation

solana rpc client

from solana.rpc.api import Client

solders tool

from solders.pubkey import Pubkey
from solders.keypair import Keypair
from solders.message import MessageV0
from solders.transaction import VersionedTransaction

create client

client = Client("https://api.devnet.solana.com")

set sas programId

#devnet
program_id = "FJ8myMh9dRcgc2n8xBrWTbCrFYAbHQZCPtMzhhmvNo4M"

create credential

def create_credential():

    _settings = {
            "authority": authority.pubkey(),
            "name": "sdk_credential",
            "signers": [payer.pubkey(), authority.pubkey()]
        }

    credential = Credential(_settings)

    instruction_construct = credential.create_instruction(program_id)

    # Create a message
    recent_blockhash = client.get_latest_blockhash().value.blockhash
    message = MessageV0.try_compile(payer.pubkey(), [instruction_construct], [], recent_blockhash)

    transaction = VersionedTransaction(message, [payer, authority])

    resp = client.send_transaction(transaction)
    print(resp)

create schema

def create_schema():

    from borsh_construct import String

    credential = Credential.from_address(client, credential_pda)

    fields = ["index", "chain", "subject", "score", "timestamp"]

    layout_type = [String, String, String, String, String]
    layout = Schema.encode_layout_data(layout_type)

    _settings = {
        "credential": credential_pda,
        "credential_data": credential,
        "name": "sdk_schema",
        "description": "sdk_schema media score",
        "layout": layout,
        "fieldNames": fields,
        "isPaused": 0,
        "version": "1"
        }

    schema = Schema(_settings)

    #instruction = credential.create_instruction(program_id)
    instruction_construct = schema.create_instruction(program_id)

    # Create a message
    recent_blockhash = client.get_latest_blockhash().value.blockhash
    message = MessageV0.try_compile(payer.pubkey(), [instruction_construct], [], recent_blockhash)

    transaction = VersionedTransaction(message, [payer, my_account])

    resp = client.send_transaction(transaction)
    print(resp)
    

tokenize schema

def tokenize_schema():

    schema = Schema.from_address(client, schema_pda)

    #instruction = credential.create_instruction(program_id)
    instruction_construct = schema.tokenize_instruction(program_id, max_size=100)
    
    # Create a message
    recent_blockhash = client.get_latest_blockhash().value.blockhash
    message = MessageV0.try_compile(payer.pubkey(), [instruction_construct], [], recent_blockhash)

    transaction = VersionedTransaction(message, [payer, my_account])

    resp = client.send_transaction(transaction)
    print(resp)

create attestation

def create_attestation():
    
    schema = Schema.from_address(client, schema_pda)
    attestaion_nonce: Keypair = Keypair.from_bytes(<private_key>)

    attestation_data = {
        "index": "0",
        "chain": "soalna",
        "subject": str(payer.pubkey()),
        "score": "95.43",
        "timestamp": "1746102729"
    }

    _settings = {
        "nonce": attestaion_nonce,
        "credential": schema.credential_pda,
        "credential_data": schema.credential,
        "schema": schema_pda,
        "schema_data": schema,
        "data": attestation_data,
        "signer": schema.credential.signers[0],
        "expiry": 1000
        }
    
    attestation = Attestation(_settings)

    instruction_construct = attestation.create_instruction(program_id)

    # Create a message
    recent_blockhash = client.get_latest_blockhash().value.blockhash
    message = MessageV0.try_compile(payer.pubkey(), [instruction_construct], [], recent_blockhash)

    transaction = VersionedTransaction(message, [payer, my_account])

    resp = client.send_transaction(transaction)
    print(resp)

create tokenize attestation

def create_tokenize_attestation():

    schema = Schema.from_address(client, schema_pda)
    tokenize_attestaion_nonce: Keypair = Keypair.from_bytes(<private_key>)

    attestation_data = {
        "index": "0",
        "chain": "soalna",
        "subject": str(payer.pubkey()),
        "score": "75.3",
        "timestamp": "1746102729"
    }

    mint_name = "Test Asset"
    mint_uri = "https://x.com"
    mint_symbol = "VAT"
    mint_account_space = 1620

    _settings = {
        "nonce": tokenize_attestaion_nonce.pubkey(),
        "credential": schema.credential_pda,
        "credential_data": schema.credential,
        "schema": schema_pda,
        "schema_data": schema,
        "data": attestation_data,
        "signer": schema.credential.signers[0],
        "expiry": 1000,
        "mint_name": mint_name,
        "mint_uri": mint_uri,
        "mint_symbol": mint_symbol,
        "mint_account_space": mint_account_space

        }
    
    attestation = Attestation(_settings)

    #instruction = credential.create_instruction(program_id)
    instruction_construct = attestation.tokenize_instruction(program_id, tokenize_attestaion_nonce)
    
    # Create a message
    recent_blockhash = client.get_latest_blockhash().value.blockhash
    message = MessageV0.try_compile(payer.pubkey(), [instruction_construct], [], recent_blockhash)

    transaction = VersionedTransaction(message, [payer, my_account])

    resp = client.send_transaction(transaction)
    print(resp)

fetch credential

def fetch_credential():

    credential = Credential.from_address(client, credential_pda)

    print("credential:", credential)

    instruction = credential.create_instruction(program_id)

    new_credential, pid = Credential.parse_instruction(bytes(instruction))

    print("new_credential:", new_credential)
    print("pid:", pid)


def fetch_schema():

    schema = Schema.from_address(client, schema_pda)

    print("schema:", schema)

    instruction = schema.create_instruction(program_id)

    new_schema, pid = Schema.parse_instruction(client, bytes(instruction))

    print("new_schema:", new_schema)
    print("pid:", pid)

fetch attestation

def fetch_attestation():

    attestation = Attestation.from_address(client, attestation_pda)

    print("attestation:", attestation)
    
    instruction = attestation.create_instruction(program_id)

    new_attestation, pid = Attestation.parse_instruction(client, bytes(instruction))

    print("new_attestation:", new_attestation)
    print("pid:", pid)